"FN America, LLC, announces the mandatory recall of certain FN M249S® semi-automatic, belt-fed rifles in both standard and PARA configurations. A recently identified design issue within the hammer group of the rifle may adversely affect the rifle’s reliability. Under certain circumstances, a reset failure within the hammer group may cause the M249S to cease to function, causing an unsafe firing event. To correct this condition and restore consistent, proper and safe operation of the firearm, it is necessary to replace the hammer group."